1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
2 <html>
3 <head>
4 <title>CSS Test: Relative Positioning - overconstrained top = -bottom</title>
5 <link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
6 <link rel="help" href="http://www.w3.org/TR/CSS21/visuren.html#relative-positioning">
7 <meta name="flags" content="">
8 <meta name="assert" content="For a relatively positioned element, if neither 'top' nor 'bottom' is 'auto', used value of 'bottom' is minus the value of 'top'.">
9 <style type="text/css">
10 div {
11 height: 80px;
12 width: 120px;
13 }
14 .outer {
15 background: green;
16 position: relative;
17 top: 50%;
18 bottom: 50%;
19 }
20 .inner {
21 background: green;
22 position: relative;
23 bottom: inherit; /* using inheritance to test computed vs. used */
24 }
25 .control {
26 background: red;
27 margin-top: -80px;
28 height: 120px;
29 }
30 </style>
31 </head>
32 <body>
33 <p>There must be a green box below and no red.</p>
34 <div class="container">
35 <div class="outer">
36 <div class="inner"></div>
37 </div>
38 </div>
39 <div class="control"></div>
40 </body>
41 </html>